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公开(公告)号:US672429A
公开(公告)日:1901-04-16
申请号:US1899719773
申请日:1899-06-08
Applicant: ANDREW ANDERSON
Inventor: EVERSON GEORGE
CPC classification number: C06F1/08
公开(公告)号:US672429A
公开(公告)日:1901-04-16
申请号:US1899719773
申请日:1899-06-08
Applicant: ANDREW ANDERSON
Inventor: EVERSON GEORGE
CPC classification number: C06F1/08